<div class="fileinput fileinput-new" data-provides="fileinput">
    <span class="btn btn-default btn-file" v-bind:class="{no_display:positivePhotoInfo.chooseFlag==1}">
        <span class="fileinput-new" >选择图片</span>
    </span>
    <input type="file" class="file" accept="image/jpeg,image/jpg" name="..." v-on:change="choosePositivePhoto($event)">
        <img v-bind:src="positivePhotoInfo.imgInfo" v-bind:class="{no_display:positivePhotoInfo.chooseFlag==0}" width="200px" height="200px">
</div>